长丝是极长的纤维，包括天然丝和化纤丝。
Filament is very long fibre, including the natural fibre silk and the synthetic fibres.
对55个杉木无性系管胞微纤丝角的遗传变异进行了研究。
Genetic variations on tracheid microfibril Angle of 55 Chinese fir clones were investigated.
骨吸收过程中，无机盐可以先吸收，残剩粗糙不规则的胶原纤丝。
During bone resorption, the inorganic components of the bone matrix were first dissolved and resorbed leaving behind rough and irregular collagen fibrils.
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